<!DOCTYPE html>
<html lang="en">

<head>
  <title>Web Paint</title>
  <meta charset="UTF-8">
  <meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" name="viewport" />
  <link href="css/style.css" rel="stylesheet">
  <link href="css/message.css" rel="stylesheet">
  <link href="css/bootstrap.css" rel="stylesheet">
</head>

<body>
  Pick a Color: <input type="color" id="hex">
  Set Pen Size: <input type="range" id="size" onchange="changepensize()" value="19">
  <button class="btn" disabled id="undo" onclick="canvasUndo()">←</button><button class="btn" disabled id="redo" onclick="canvasRedo()">→</button>
  <button id="test" class="btn" onclick="getData()">测试数据</button>
  <button class="btn" onclick="sendData()">发送</button>
  <textarea id="s" type="text"></textarea>
  <span id="c">complete</span>
  <canvas id="draw" width="1440" height="471"></canvas>
  <script src="js/jquery.js"></script>
  <script src="js/message.js"></script>
  <script src="js/app.js"></script>
</body>

</html>